RU2705506C2 - Capsule, system for preparing drink suitable for drinking from similar capsule and use of such capsule in beverage preparation device - Google Patents

Abstract

FIELD: beverage preparation devices.

SUBSTANCE: capsule contains a substance for preparation of a beverage suitable for drinking. Capsule contains an aluminium capsule body, having a side wall and an outwardly projecting flange and a sealing element on the outwardly projecting flange for providing contact with a female element of the beverage preparation device, which is sealing against the fluid medium. Beverage preparation device comprises annular element with free contact end, which can be made with multiple open grooves passing in radial direction. Sealing element is integral with outward protruding flange and comprises at least one protrusion protruding from outwardly projecting flange. Projection comprises an upper part of the projection and is made with such configuration that the upper part of the projection provides application of radial force to the free contact end of the circular element, if the capsule is installed in the specified position in the female element of the beverage preparation device and the female element is closed by the beverage preparation device closing element.

EFFECT: invention discloses a capsule, a system for preparing a drink suitable for drinking from a similar capsule and use of such capsule in a beverage preparation device.

81 cl, 15 dwg

Description

The invention relates to a capsule containing a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by applying pressure fluid to the capsule, wherein the capsule comprises an aluminum capsule body having a central axis of the capsule body, wherein the aluminum capsule body is made the lower part, the side wall and the protruding outward flange, while the capsule further comprises an aluminum cap attached to the protruding outward flange, while the cap is hermetically sealed breaks the capsule, while the capsule further comprises a sealing element on the outwardly projecting flange to provide a sealing seal against the fluid of the beverage device if the capsule is installed in a predetermined position in the female element of the beverage device and the female element is closed by a closure an element of a beverage preparation device, such as an extraction plate of a beverage preparation device, so that in the protruding capsule flange and at least a portion of the capsule sealing element are hermetically seized between the female element and the closing element of the beverage preparation device, the female beverage preparation device comprising an annular element having a central axis of the annular element and a free contact end, while free the contact end of the annular element, if necessary, is made with many passing in the radial direction, open grooves.

The invention also relates to a system for preparing a drinkable beverage from a capsule by using a fluid supplied under pressure to a capsule containing:

a beverage preparation device comprising a female capsule receiving member, the female component comprising a fluid injection means for supplying pressurized fluid to the capsule, the beverage beverage device further comprising a closure member, such as an extraction plate, for closing the covering element of the device for making drinks, while the covering element of the device for making drinks an annular holding member having a central axis of the annular member and the free end of the pin and the free end of the annular contact element is formed with a plurality of radially extending open grooves if necessary;

a capsule containing a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by means of a fluid supplied under pressure into the capsule by means of a beverage preparation device for injecting a fluid, the capsule comprising an aluminum capsule body having a central axis of the capsule body while the aluminum capsule body is made with a lower part, a side wall and a flange protruding outward, while the capsule further comprises an aluminum cap attached to the outwardly extending flange, wherein the lid hermetically closes the capsule, wherein the capsule further comprises a sealing element on the outwardly extending flange to provide fluid-sealing contact with the enclosing member of the beverage device if the capsule is installed in a predetermined position in the enclosing element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks, so that ystupayuschy outwardly capsule flange and at least a portion of the sealing member of the capsule sealingly trapped between the female element and the closure element of the beverage preparation device.

In addition, the invention relates to the use of a capsule in a beverage preparation device comprising a female capsule receiving member, the female member comprising a fluid injection means for supplying pressurized fluid to the capsule, the beverage preparation further comprising a closure an element, such as an extraction plate, for closing the female element of the beverage preparation device, while the female element The beverage preparation device further comprises an annular element having a central axis of the annular element and a free contact end, wherein the free contact end of the annular element is optionally provided with a plurality of radially extending open grooves; wherein the capsule contains a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by means of a fluid supplied under pressure into a capsule by means of a beverage preparation device for injecting a fluid, the capsule containing an aluminum capsule body having a central axis of the body capsules, while the aluminum capsule body is made with a lower part, a side wall and a protruding outward flange, while the capsule further comprises aluminum a lid attached to an outwardly extending flange, wherein the lid hermetically closes the capsule, wherein the capsule further comprises a sealing element on the outwardly extending flange to provide fluid sealing contact with the enclosing member of the beverage device if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks, to which the protruding outward flange of the capsule and at least a portion of the sealing element of the capsule are hermetically seized between the female element and the closing element of the beverage preparation device.

Similar capsule, system and application are known from EP-B-1 700 548. In the known system, the capsule is made with a sealing element having the shape of a step, that is, with a sharp increase in the diameter of the side wall of the capsule, and the female element of this known system has a sealing surface that acts on the sealing element to allow the sealing element to bend, wherein the sealing surface has such a slope that the bending of the sealing element is a step deformation inward and in bottom. In addition, in the known system, the female member comprises a capsule holder and a manually or automatically controlled mechanism for biasing the female member and capsule holder relative to each other. A manually controlled or automatic mechanism provides a force to the sealing element of the capsule when the female element closes on the capsule holder. This force should ensure a tight seal between the female member and the capsule. Since the manually controlled or automatic mechanism is movable relative to the base, the sealing capabilities of the system may depend on the pressure of the fluid pumped by the fluid injection means. As the fluid pressure increases, the force between the capsule sealing member and the free end of the female member also increases. A similar system is described below . The capsule sealing element should be designed such that when maximum fluid pressure is reached in the female element, the sealing element must still provide fluid sealing contact between the female element and the capsule. However, the sealing element should also be designed so that before cooking or at the beginning of cooking, when the fluid pressure in the enclosing member outside the capsule is relatively low, the sealing element also provides fluid sealing contact between the enclosing member and the capsule. If at the start of cooking there is no fluid-tight seal between the capsule and the female member, a leak will occur. However, if a leak occurs, there is a real possibility that the pressure in the enclosing member and on the outside of the capsule will not increase sufficiently to increase the force acting on the sealing member through the free end of the enclosing member if the manually operated or automatic mechanism moves the enclosing member toward capsule holder. Only if there is a sufficient initial seal, the pressure in the female element will increase, as a result of which the force acting from the free end of the female element on the capsule sealing element will also increase to ensure sufficient contact sealing against the fluid even with increased fluid pressure. In addition, this increased fluid pressure outside the capsule also provides increased fluid pressure inside the capsule, which is essential if the capsule is provided with a cap that is capable of bursting on the relief elements of the capsule holder (also called extraction plate) of the pressure beverage device fluid in the capsule.

It follows from the foregoing that the sealing element is an element whose construction is very important. It should allow fluid sealing contact between the enclosing member and the capsule at relatively low fluid pressure, provided that a relatively small force is applied to the sealing element through the free end of the enclosing member, but it should also provide a sealing against fluid contact at a significantly higher fluid pressure in the enclosing member outside the capsule if greater force is applied by means of freedom th end of the female member to the sealing member of the capsule. In particular, when the free contact end of the enclosing member is formed with radially extending, open grooves that serve as an air inlet channel when the force between the enclosing member and the capsule holder ceases to be easier to remove, the sealing member must also have the ability to "close" open, radially extending grooves to ensure effective compaction.

The objective of the invention is to develop an alternative sealing element, which is relatively simple to manufacture, which is environmentally friendly if the capsule is disposed of after use, and / or which provides sufficient sealing as at relatively low fluid pressure, if only a relatively small force is applied to the sealing element through the free end of the enclosing element (sometimes also referred to as the initial seal), and at a significantly higher pressure and fluid, if a greater force is applied (for example, during cooking) through the free end of the female element to the capsule sealing element, even in the case of the female element, the free contact end of which is made with radially extending open grooves.

An object of the invention is also to develop an alternative system for preparing a drinkable beverage from a capsule and to propose an alternative use of the capsule in a beverage preparation device.

In accordance with the invention, according to a first aspect, there is provided a capsule comprising a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by supplying pressurized fluid to the capsule, wherein the capsule comprises an aluminum capsule body having a central axis of the capsule body, wherein the aluminum capsule body is made with a lower part, a side wall and a flange protruding outward, while the capsule further comprises an aluminum cap attached to the protruding I flange the flange, while the lid hermetically closes the capsule, while the capsule further comprises a sealing element on the protruding outward flange to provide sealing against fluid communication with the covering element of the device for making drinks, if the capsule is installed in a predetermined position in the covering element of the device for making beverage and the enclosing element is closed by means of a closing element of a beverage preparation device such as an extraction plate drinks, so that the protruding outward flange of the capsule and at least a portion of the sealing element of the capsule are hermetically seized between the enclosing element and the closing element of the device for making drinks, while the covering element of the device for making drinks contains an annular element having a central axis of the annular element and a free contact end, while the free contact end of the annular element, if necessary, is made with many passing in rad the direction of the open grooves, characterized in that the sealing element is integral with the protruding outward flange and contains at least one protrusion protruding from the outward flange, while this at least one protrusion contains the upper part of the protrusion, and at least one protrusion is configured so that the upper part of the protrusion provides a radial force to the free contact end of the annular element, if the capsule is installed in a predetermined position in the coverage the closure element of the beverage preparation device and the enclosing element is closed by the closure element of the beverage preparation device. Since the sealing element is integral with the protruding outward flange and contains at least one protrusion, the upper part of which provides a radial force to the free contact end of the annular element, if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by the closure element of the beverage preparation device, sufficient sealing can be provided. Such a sealing element is relatively easy to manufacture. In addition, the capsule can provide sufficient compaction with respect to the free contact end made with radially extending open grooves. In addition, the seal facilitates the installation of the capsule in a predetermined position inside the device for making drinks.

In this application, the presence of a seal that tightens against the fluid means that 0-6%, preferably 0-4%, more preferably 0-2.5% of the total fluid supplied to the female beverage preparation element can seep out due to leakage between the free contact end and the sealing element of the capsule.

The invention is particularly preferred when in a capsule embodiment the capsule contains an extractable product as a substance for preparing a drinkable beverage, wherein the extractable product is preferably 5-20 grams, preferably 5-10 grams, more preferably 5-7 grams of extractable product such as roasted and ground coffee.

In an embodiment of the capsule according to the invention, which is particularly simple to manufacture, the outer diameter of the protruding outward flange of the capsule exceeds the diameter of the lower part of the capsule. The outer diameter of the protruding outward flange is preferably approximately 37.1 mm, and the diameter of the lower part of the capsule is approximately 23.3 mm.

The invention is particularly preferred when, in an embodiment of the capsule, the thickness of the aluminum capsule body is such that it is easily deformed if the capsule is installed in a predetermined position in the covering element of the beverage preparation device and the covering element is closed by the closing element of the beverage preparation device, wherein the thickness of the aluminum housing the capsule is preferably 20-200 microns, preferably 100 microns.

The invention is particularly preferred when, in an embodiment of the capsule, the thickness of the aluminum cap is 15-65 microns, preferably 30-45 microns, and more preferably 39 microns.

In one embodiment of the capsule of the invention, the wall thickness of the aluminum cap is less than the wall thickness of the aluminum capsule body.

In a further embodiment of the capsule of the invention, the aluminum cap is capable of tearing on a closure of a beverage preparation device, such as an extraction plate of a beverage preparation device, by the pressure of the fluid in the capsule.

In one embodiment of the capsule according to the invention, which is particularly simple to manufacture, the side wall of the aluminum capsule body has a free end opposite the lower part, with the protruding outward flange protruding from the free end of the side wall in a direction at least substantially transverse to the central axis of the body capsules. The protruding outward flange preferably comprises a swirling outer edge, which is preferred to provide sufficient sealing to the relatively free contact end formed with radially extending open grooves. The radius of the inner edge of the swirling outer edge of the outwardly extending flange relative to the central axis of the capsule body is preferably at least 32 mm, so that a clearance is provided from the annular end surface of the enclosing member. In this case, it is preferable that the sealing element is located between the free end of the side wall of the aluminum capsule body and the inner edge of the twisted outer edge of the protruding outward flange to obtain an even more satisfactory seal.

To ensure that the curled outer edge does not interfere with the work of a wide variety of industrially manufactured and commercially available and future beverage preparation devices, the curled outer edge of the outwardly extending flange has a largest dimension of approximately 1.2 millimeters.

The invention is particularly preferred for capsules in which the inner diameter of the free end of the side wall of the aluminum capsule body is approximately 29.5 mm. The distance between the free end of the side wall of the aluminum capsule body and the farthest edge of the protruding outward flange may be approximately 3.8 millimeters. The preferred height of the aluminum capsule body is approximately 28.4 mm.

In one embodiment of the capsule according to the invention, which is easier for the user to remove from the beverage device after use, the aluminum capsule body is truncated, and the side wall of the aluminum capsule body preferably forms an angle with a line transverse to the central axis of the capsule body of approximately 97, 5 °.

In a preferred embodiment of the capsule of the invention, the lower part of the aluminum capsule body has a largest inner diameter of approximately 23.3 mm. Preferably, the lower part of the aluminum capsule body is truncated and preferably has a lower part height of approximately 4.0 mm, and that the lower part further has a substantially flat central part opposite the lid and having a diameter of approximately 8.3 mm.

In almost all cases, a sufficient seal can be obtained in the embodiment of the capsule according to the invention, in which the height of the part of the sealing element with which the free end of the covering element must first come into contact when closing the covering element is at least about 0.1 mm, more preferably at least 0.2 mm and. most preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm and most preferably at most 1.2 mm.

In a preferred embodiment of the capsule according to the invention, the capsule contains an inner surface, and an inner coating is provided on the inner surface of at least the side wall of the capsule. In particular, when the capsule is made by deep drawing, the inner coating facilitates the deep drawing process. In the case where the aluminum capsule lid is attached to the protruding outward flange by means of a sealing varnish, it is particularly preferred if the inner coating consists of the same material as the sealing varnish. Depending on the inner coating used, it is preferable that the sealing element is free from the inner coating to prevent the inner coating from shedding from the sealing element.

In a further embodiment of the capsule according to the invention, the capsule comprises an outer surface, with colored lacquer provided on the outer surface of the capsule. To facilitate deep drawing, it is preferable to perform an outer coating on the outer surface of the colored varnish. Depending on the color varnish and the outer coating used, it is preferable that the sealing element be free of colored varnish (and therefore the outer coating) to prevent the colored varnish / outer coating from falling off the sealing element.

In yet a further embodiment of the capsule according to the invention, this at least one protrusion comprises a side wall of the protrusion that is inclined relative to the protruding flange of the aluminum capsule body, the side wall of the protrusion being configured so that it is easily deformed if the capsule is installed in a predetermined position. position in the covering member of the beverage device and the covering member is closed by the closing member of the beverage device. This increases the force acting on the free contact end, and therefore improves the seal. In this case, it is preferable if the distance between the protrusion and the side wall of the aluminum capsule body is such that the free contact end of the annular element comes into contact with the protrusion and the side wall of the aluminum capsule body if the capsule is installed in a predetermined position in the covering element of the beverage preparation device and the surrounding element closed by the closing element of the device for making drinks.

In a preferred embodiment of the capsule according to the invention, the sealing element, in addition to the at least one protrusion protruding from the protruding outward flange, comprises a shallow part between the upper part of the protrusion and the side wall of the aluminum capsule body. To ensure sealing, it is preferable if the support is formed by a protrusion, a gently sloping part and a side wall of the aluminum capsule body, wherein the distance between the protrusion and the side wall is such that the free contact end of the annular element is enclosed by the protrusion and the side wall of the aluminum capsule body, if the capsule is installed in a predetermined position in the covering member of the beverage device and the covering member is closed by the closing member of the beverage device.

The protrusion, the side wall of the aluminum capsule body and the flat part can be made so that the flat part comes into contact with the free contact end of the annular element, if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks.

Alternatively, the sealing element may comprise two spaced protrusions, each of which protrudes from the flange protruding outward, and a gently sloping part between the two protrusions, wherein the distance between these two protrusions is such that the free contact end of the annular element is pressed between the converging surfaces of the two protrusions, if the capsule is installed in a predetermined position in the covering element of the device for preparing drinks and the covering element is closed by means of the closing element of the device Food preparation. It is preferable if the distance between these two protrusions is such that these two protrusions come into contact with the free contact end of the ring element, if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks . In particular, a sufficient seal can be obtained when two spaced protrusions and the gently sloping portion are configured such that the gently sloping portion comes into contact with the free contact end of the annular member if the capsule is installed in a predetermined position in the female member of the beverage device and the female member is closed by the closing element of the device for making drinks. The capsule may preferably form a support for the female element of the beverage device if the capsule is installed in a predetermined position in the female element of the beverage device and the female element is closed by the cover element of the beverage device, wherein the support covers at least a portion of the free contact end of the annular the element and the support are formed by these two protrusions and a gentle part between them.

The shallow part may be substantially flat or may contain a curved part. In particular, a preferred embodiment of the capsule according to the invention, in which the gently sloping portion is V-shaped. Thus, the free contact end of the annular element is squeezed between two protrusions, which provides sufficient sealing.

An additional objective of the embodiments of the invention is to provide reliable low and high pressure seals with respect to the free contact end of the female element, in particular with low sensitivity to changes in the diameter, thickness and shape of the free contact end that occur in different models of cooking systems, and non-circularity (for example , ovality) of the free contact end and / or flange of the capsule. The latter may occur, for example, as a result of compression of capsules in a bag or shopping trolley. In one embodiment of the invention, this task is accomplished by ensuring that the first of these two protrusions protrudes further from the base portion of the protruding outward flange to which the cover is attached than the second of the two protrusions.

If, when closing the female element, too much of this one of the protrusions protruding farthest from the base part will be located under the free contact end with alignment relative to it in the axial direction, it is pressed outward in the radial direction, so that the free contact end extends along this protruding farthest from just one of the protrusions. This radial displacement also causes the displacement of the other of the protrusions in the radial direction to the free contact end, so that it is precisely set to provide strong sealing contact interaction with the free contact end. In addition, the protruding farthest one of the protrusions can be radially deformed at a relatively large distance, so that it can adapt to relatively large deviations, while the other of the protrusions is relatively stiff, which is preferable to create strong sealing pressure.

If the first of the protrusions is an inner protrusion of these two protrusions, the capsule is particularly suitable for use in industrially manufactured and commercially available coffee brewing devices such as Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza, in which there is a free contact the end of the annular element is made with many radially extending open grooves, the grooves being deeper in the inner surface portion than in the outer surface portion of the free contact end, or grooves are absent on the outer surface portion of the free contact end. Such devices provide a reliable and accurately located seal between the second of the protrusions and the relatively smooth outer surface of the free contact end.

To ensure reliable sealing, it is also preferable if the first of these two protrusions has an extreme upper end extending around the axis of the capsule with a diameter of 31.9 to 32.4 mm, and the second of these two protrusions has an extreme upper end extending around the axis capsules with a diameter of 29.2 to 29.8 mm. Thus, when used in industrially manufactured and commercially available coffee brewing devices such as Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza, the outer edge region of the free end of the enclosing member is firmly pressed against the second protrusion.

If the gently sloping portion is axially spaced from the lid, this area between the first and second protrusions is shifted axially toward the lid when the female member is closed by the closing member of the beverage device. This causes the first protrusion and the second protrusion to deform towards the free contact end of the annular element due to the tilt and "tilt" of the first protrusion and the second protrusion, which increases the radial contact pressure acting on the free contact end of the annular element, which helps to ensure sufficient sealing.

In accordance with the invention, according to a second aspect, there is provided a system for preparing a drinkable beverage from a capsule by using a fluid supplied under pressure to a capsule, comprising:

a beverage preparation device comprising a female capsule receiving member, the female component comprising a fluid injection means for supplying pressurized fluid to the capsule, the beverage beverage device further comprising a closure member, such as an extraction plate, for closing the covering element of the device for making drinks, while the covering element of the device for making drinks an annular holding member having a central axis of the annular member and the free end of the pin and the free end of the annular contact element is formed with a plurality of radially extending open grooves if necessary;

a capsule containing a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by means of a fluid supplied under pressure into the capsule by means of a beverage preparation device for injecting a fluid, the capsule comprising an aluminum capsule body having a central axis of the capsule body while the aluminum capsule body is made with a lower part, a side wall and a flange protruding outward, while the capsule further comprises an aluminum cap attached to the outwardly extending flange, wherein the lid hermetically closes the capsule, wherein the capsule further comprises a sealing element on the outwardly extending flange to provide fluid-sealing contact with the enclosing member of the beverage device if the capsule is installed in a predetermined position in the enclosing element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks, so that The protruding capsule flange and at least a portion of the capsule sealing element are hermetically seized between the enclosing element and the closing element of the beverage preparation device, characterized in that the sealing element is integral with the protruding outward flange and comprises at least one protrusion protruding from the protruding outward flange, while this at least one protrusion contains the upper part of the protrusion, and while this at least one protrusion is made with this configuration that the upper part of the protrusion provides the application of radial force to the free contact end of the annular element, if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks.

Since the sealing element is integral with the protruding outward flange and contains at least one protrusion, the upper part of which provides a radial force to the free contact end of the annular element, if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by the closure element of the beverage preparation device, sufficient sealing can be provided. Such a sealing element is relatively easy to manufacture. In addition, the capsule can provide sufficient compaction with respect to the free contact end made with radially extending open grooves.

The protrusion or protrusions may protrude from at least one base portion of the flange to which the cover is attached. The protrusion or protrusions may protrude in the axial direction from the base portion in the direction from the cover. The upper part of the protrusion may form some part of the protrusion, for example, half, third or quarter of the protrusion, which is the most remote in the axial direction from the base part.

In relation to preferred embodiments of the system given in the dependent claims, which relate to the same features as the features of the dependent claims related to the capsule, reference should be made to the foregoing.

The invention is particularly suitable in the system according to the invention, in which when using the maximum fluid pressure in the female element of the beverage preparation device is in the range of 6-20 bar, preferably between 12 and 18 bar. Even at such high pressures, a sufficient seal between the capsule and the beverage preparation device can be ensured.

The system is preferably configured such that when used during brewing, the free end of the female element of the beverage device provides a force F2 to the sealing element of the capsule to provide fluid sealing contact between the outwardly facing flange of the capsule and the female element of the beverage device, this F2 is in the range of 500-1500 N, preferably in the range of 750-1250 N, when the pressure P2 of the fluid in the female element of the device for I preparing drinks outside the capsule is in the range of 6-20 bar, preferably between 12 and 18 bar. In particular, the system is designed such that when used before cooking or at the beginning of cooking, the free end of the female element of the beverage preparation device provides a force F1 to the capsule sealing element to provide fluid-tight contact between the outwardly facing capsule flange and the female element of the device for the preparation of beverages, wherein F1 is in the range of 30-150 N, preferably in the range of 40-150 N, more preferably 50-100 N, when the fluid pressure P1 a covering member for apparatus cooking beverage outside the capsule is in the range 0.1-4 bar, preferably 0.1-1 bar.

In an embodiment of the system according to the invention, a plurality of radially extending, open grooves are uniformly distributed relative to each other in the circumferential direction of the free contact end of the ring element of the beverage preparation device, so that it will be easier for the user to remove the capsule, while sufficient sealing can still be achieved. between the capsule and the device for making drinks.

In a preferred embodiment of the system according to the invention, the largest width of each groove in the circumferential direction (from top to top, i.e. equal to the pitch between the grooves) is 0.9-1.1 mm, preferably 0.95-1.05 mm, more preferably 0 , 98-1.02 mm, the maximum height of each groove in the axial direction of the female element of the device for making drinks is 0.01-0.09 mm, preferably 0.03-0.07 mm, more preferably 0.045-0.055 mm, most preferably 0.05 mm, and wherein the number of grooves is 90-110, p edpochtitelno 96. The width of the annular end surface in the radial direction in the location groove arrangement can be for example 0.05-0.9 mm, preferably 0.2-0.7 mm and more preferably 0.3-0.55 mm. The invention is particularly suitable when used in an embodiment of the system according to the invention, in which, during use, when the closing element of the beverage device closes the female element of the beverage device, at least the free contact end of the female element of the beverage device can move relative to the closing element devices for preparing beverages under the influence of fluid pressure in the female element of the device beverage preparation properties to the closing element of the beverage preparation device for applying maximum force between the capsule flange and the free end of the female element of the beverage preparation device. The female element may comprise a first component and a second component, wherein the second component comprises the free contact end of the female element, wherein the second component can move relative to the first component between the first and second positions. The second component can move from the first position to the second position in the direction of the closure member under the influence of fluid pressure in the enclosing member. The force F1 discussed above can be achieved if the second component is in the first position at a fluid pressure P1. The force F2 discussed above can be achieved if the second component is moved toward the second position under the action of the pressure P2 of the fluid in the enclosing member.

In accordance with the invention, according to a third aspect, there is provided the use of a capsule according to the invention in a beverage preparation device comprising a female capsule receiving member, the female member including a fluid injection means for supplying pressurized fluid to the capsule, the device for preparing the beverage further comprises a closure element, such as an extraction plate, for closing the enclosing element of the device for beverage preparation, wherein the female element of the beverage preparation device further comprises an annular member having a central axis of the annular member and the free end of the pin and the free end of the annular contact element when necessary, provided with a plurality of radial grooves; wherein the capsule contains a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by means of a fluid supplied under pressure into a capsule by means of a beverage preparation device for injecting a fluid, the capsule containing an aluminum capsule body having a central axis of the body capsules, while the aluminum capsule body is made with a lower part, a side wall and a protruding outward flange, while the capsule further comprises aluminum a lid attached to an outwardly extending flange, wherein the lid hermetically closes the capsule, wherein the capsule further comprises a sealing element integrally with the outwardly extending flange to provide fluid sealing contact with the female member of the beverage device, if the capsule installed in a predetermined position in the covering element of the device for preparing drinks and the covering element is closed by means of the closing element of the device for preparing preparation of drinks, so that the protruding outward flange of the capsule and at least part of the sealing element of the capsule are hermetically seized between the enclosing element and the closing element of the device for making drinks. Regarding the advantage of using the invention and the preferred embodiments mentioned in the dependent claims, which relate to the same features as those of the dependent claims of the invention relating to the capsule or dependent claims of the invention relating to the system, to the foregoing.

The invention will be further further explained by way of non-limiting examples with reference to the drawings, in which

figure 1 shows a schematic illustration of an embodiment of a system according to the invention;

FIG. 2 shows a perspective view of an embodiment of a beverage device of the system according to the invention, wherein the free contact end of the female element of a beverage device with a plurality of radially extending open grooves is shown;

figa shows in cross section an embodiment of a capsule according to the invention before use;

FIG. 3B shows an enlarged fragment of the capsule of FIG. 3A showing an outwardly extending flange and a sealing member;

3C shows an enlarged fragment of the protruding outward flange of the capsule of FIGS. 3A and 3B after use;

figa shows a first embodiment of a sealing element on the protruding outward flange of the capsule according to the invention;

4B shows a second embodiment of a sealing element on an outwardly projecting flange of a capsule according to the invention;

figs shows a third embodiment of the sealing element on the protruding outward flange of the capsule according to the invention;

Fig. 4D shows a fourth embodiment of a sealing element on an outwardly projecting flange of a capsule according to the invention;

4E shows a fifth embodiment of a sealing element on an outwardly projecting flange of a capsule according to the invention;

FIG. 4F shows a sixth embodiment of a sealing member on an outwardly projecting flange of a capsule according to the invention; FIG.

FIG. 4G shows a seventh embodiment of a sealing element on an outwardly projecting flange of a capsule according to the invention; FIG. and

5A and 5B are schematic diagrams of successive stages of deformation of a seventh embodiment of a sealing element on an outwardly projecting flange of a capsule according to the invention, if the capsule is installed in a predetermined position in the covering element of the beverage preparation device and as the covering element is closed by the closing element of the cooking device drinks; and

6 is a schematic sectional view of a deformed portion of a flange and a portion of a female member in which there is a jumper between the inner and outer rims of the free end of the female member.

In the figures and in the following description, like reference numerals refer to like elements.

Figure 1 shows a schematic representation in sectional view of an embodiment of a system 1 for preparing a drinkable beverage from a capsule by using a fluid supplied under pressure to the capsule. System 1 comprises a capsule 2 and a device 4 for preparing drinks. The device 4 comprises a female element 6 for holding the capsule 2. The device 4 further comprises a closing element 8, such as an extraction plate, to provide support for the capsule 2.

1, for clarity, shows the gap between the capsule 2, the female element 6 and the extraction plate 8. It should be understood that when using the capsule 2 can be in contact with the female element 6 and the extraction plate element 8. Typically, the female element 6 has a complementary shape with respect to the shape of the capsule 2. The beverage preparation device 4 further comprises a fluid injection means 10 for supplying a certain amount of fluid, such as water, under pressure in in the range of 6-20 bar, preferably between 12 and 18 bar, in a replaceable capsule 2.

In the example shown in FIG. 1, the replaceable capsule 2 comprises an aluminum capsule body 12 having a central axis 12A of the capsule body and an aluminum cap 14. In this context, the term “aluminum” is also understood to encompass an aluminum alloy. In this example, the aluminum capsule body 12 includes a side wall 16, a lower part 18 covering the side wall 16 at the first end, and an outwardly extending flange 20, protruding outward from the circumferential wall 16 at the second end opposite the lower part 18. Side wall 16, lower a portion 18 and a lid 14 enclose an interior space 22 containing a substance for preparing a drinkable beverage by extraction and / or dissolution of the substance. The substance is preferably an extractable product for preparing a drinkable beverage, wherein the extractable product is preferably 5-20 grams, preferably 5-10 grams, more preferably 5-7 grams of roasted and ground coffee to prepare one serving of the drink. The capsule is initially sealed, i.e., hermetically sealed before use.

The system 1 of FIG. 1 comprises means for piercing the lower part 24 for piercing the lower part 18 of the capsule 2 to create at least one inlet 25 in the lower part 18 for supplying fluid to the extractable product through the inlet 25.

The system 1 of FIG. 1 further comprises lid puncturing means 26 made in this case in the form of protrusions of the closure element 8 for piercing the lid 14 of the capsule 2. Lid puncturing means 26 can be configured to rupture the lid 14 as soon as the pressure (of the fluid) in the inner space 22 will exceed the threshold pressure and provide a clamp cover 14 to the means 26 of piercing the cover with sufficient force. Thus, the aluminum lid 14 is configured to rupture on the closure member 8 of the beverage preparation apparatus under the influence of the pressure of the fluid in the capsule.

The capsule 2 further comprises a sealing element 28, integral with the protruding outward flange, shown in FIGS. 1, 3A and 3B in the form of a conventional frame, but described in more detail in connection with FIG. 4, wherein said sealing element 28 is configured to providing a fluid-tight contact with the enclosing member 6 if the capsule 2 is installed in a predetermined position in the enclosing member 6 and the enclosing member 6 is closed by means of an extraction plate 8 so that the outwardly extending flange 20 the capsules 2 and at least a portion of the sealing element 28 are hermetically seized between the female element 6 and the extraction plate 8. This means that a fluid-tight contact is created between the sealing element and the free contact end.

As shown in FIG. 2, the female element 6 of the beverage preparation device comprises an annular element 41 having a central axis 41A of the annular element and a free contact end 30. The free contact end 30 of the annular element 41 is configured with a plurality of radially extending open grooves 40. Many radially extending open grooves 40 are evenly distributed relative to each other in the circumferential direction of the free contact end 30 of the annular element 41. The greatest width of each grooves 40 in the circumferential direction is 0.9-1.1 mm, preferably 0.95-1.05 mm, more preferably 0.98-1.02 mm, the maximum height of each groove 40 in the axial direction of the enclosing element 6 is 0.01-0.09 mm, preferably 0.03-0.07 mm, more preferably 0.045-0.055 mm, and most preferably 0.05 mm. The number of grooves 40 is in the range of 90-110, preferably 96. The width of the free end in the radial direction at the location of the grooves is usually 0.05-0.9 mm, more specifically 0.2-0.7 mm, more specifically 0, 3-0.55 mm.

An embodiment of the capsule according to the invention is shown in more detail in FIGS. 3A and 3B. In the shown embodiment, the outer diameter of the ODF of the outwardly extending flange 20 is greater than the diameter DB of the lower portion 18 of the capsule 2. In the shown embodiment, the outer diameter of the ODF of the outwardly extending flange 20 is approximately 37.1 mm, and the diameter of the DB of lower part 18 is approximately 23.3 mm . The thickness of the aluminum capsule body 12 is such that it is easily deformed if the capsule is installed in a predetermined position in the covering member of the beverage preparation device and the covering member is closed by the closing member of the beverage preparation device; the thickness of the aluminum capsule body is preferably 100 microns, but in other embodiments, the thickness may be 20-200 microns.

In the shown embodiment, the wall thickness of the aluminum cover 14 is 39 microns. The wall thickness of the aluminum cap 14 is preferably less than the thickness of the aluminum capsule body 12.

The side wall 16 of the aluminum shell 12 of the capsule has a free end 42 opposite the bottom 18. The IDF inner diameter of the free end 42 of the side wall 16 of the aluminum shell 12 of the capsule is approximately 29.5 mm. The protruding outward flange 20 projects from this free end 42 in a direction at least substantially transverse to the central axis 12A of the capsule body. The protruding outward flange 20 comprises a curled outer edge 43, which is preferred to provide a seal between the capsule and the female member. In the shown embodiment, the twisted outer edge 43 of the outwardly extending flange 20 has a largest dimension of approximately 1.2 millimeters. The DIF distance between the free end 42 of the side wall 16 of the aluminum capsule body 12 and the inner edge 43A of the twisted outer edge 43 is approximately 2.7 mm, while the DOF distance between the free end 42 of the side wall 16 of the aluminum capsule body 12 and the farthest from the center the edge 43B of the protruding outward flange 20 is approximately 3.8 millimeters. The radius of the inner edge 43A of the swirling outer edge 43 with respect to the central axis of the capsule body is preferably at least 32 mm.

As shown in FIGS. 3A and 3B, the sealing member 28 is located between the free end of the side wall 16 of the aluminum capsule body 12 and the inner edge 43A of the swirling outer edge 43 of the outwardly projecting flange. The sealing element 28 is shown as a conventional frame, but will be described in more detail below. Regardless of the embodiment of the sealing element 28, the height of the portion of the sealing element with which the free end of the covering element must first come into contact when closing the covering element is at least about 0.1 mm, more preferably at least 0.2 mm and, most preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm and most preferably at most 1.2 mm to ensure proper compaction.

As can be seen from FIG. 3A, the aluminum capsule body 12 is truncated. In the shown embodiment, the side wall 16 of the aluminum capsule body 12 forms an angle A with a line transverse to the central axis 12A of the capsule body of approximately 97.5 °. The lower part 18 of the aluminum capsule body 12 has a largest inner diameter DB of approximately 23.3 mm. The lower part 18 of the aluminum capsule body 12 is also truncated and, in the embodiment shown, has a BH height of the lower part of approximately 4.0 mm. The lower part 18 further has a substantially flat central part 18A opposite the cover 14, wherein said central part 18A has a DEE diameter of approximately 8.3 mm, and an input (s) can be formed in said central part 18A ( s) aperture (s) 25. Inlet openings may also be formed in the truncated portion between the central portion 18A and the side wall 16. The total height TH of the aluminum capsule body 12 is approximately 28.4 mm.

The system 1 shown in FIG. 1 operates as follows for making a cup of a drinkable drink, in the example shown, coffee, the substance being roasted and ground coffee.

The capsule 2 is placed in the female element 6. The extraction plate 8 is brought into contact with the capsule 2. The lower part piercing means 24 pierce the lower part 18 of the capsule 2 to form inlet openings 25. A fluid, in this case hot water under pressure, is supplied to the product to be extracted. located in the inner space 22, through the inlet openings 25. Water will wet the ground coffee and extract the desired substances to form a coffee beverage.

During the supply of pressurized water to the interior space 22, the pressure inside the capsule 2 will increase. The increase in pressure will cause deformation of the cover 14 and its pressing to intended for piercing the cover means 26 of the extraction plate. Once the pressure reaches a certain level, the tensile strength of the cover 14 will be overcome, and the cover 14 will burst at the means of piercing the cover 26, which will lead to the formation of outlet openings. The prepared coffee will flow out of the capsule 2 through the outlet openings and outlet channels 32 (see FIG. 1) of the extraction plate 8 and can be served in a container such as a cup (not shown).

The system 1 is designed in such a way that, before cooking or at the beginning of cooking, the free end 30 of the enclosing member 6 provides a force F1 to the sealing element 28 of the capsule 2 to provide fluid sealing contact between the outwardly facing flange 20 of the capsule 2 and the enclosing member 6 of the device for preparing drinks, wherein F1 is in the range of 30-150 N, preferably 40-150 N, more preferably 50-100 N, when the pressure P1 of the fluid in the female element of the device for preparing drinks s outside the capsule is in the range 0.1-4 bar, preferably 0.1-1 bar. During cooking, the free end 30 of the enclosing member 6 provides a force F2 to the sealing member 28 of the capsule 2 to provide fluid sealing contact between the outwardly facing flange 20 of the capsule 2 and the enclosing member 6, with a force F2 in the range of 500-1500 N, preferably in the range of 750-1250 N, when the pressure P2 of the fluid in the female member 6 of the beverage preparation device outside the capsule 2 is in the range of 6-20 bar, preferably between 12 and 18 bar. In the shown embodiment, the free contact end of the female element 6 can move relative to the extraction plate 8 under the pressure of the fluid in the female element 6 of the device to the extraction plate 8 to apply a maximum force F2 between the outwardly facing flange 20 and the free end 30 of the female element 6. This movement may occur during use, that is, in particular, at the beginning of cooking and during cooking. The female member 6 has a first component 6A and a second component 6B, with the second component having a free contact end 30. The second component 6B can move relative to the first component 6A between the first and second positions. The second component 6B can move from the first position to the second position in the direction of the closure member 8 by the pressure of the fluid in the enclosing member 6. The force F1 discussed above can be achieved if the second component 6B is in the first position at the fluid pressure P1. The force F2 discussed above can be achieved if the second component 6B is moved toward the second position under the action of the fluid pressure P2 in the enclosing member 6.

As a result of the application of force, the sealing element 28 of the capsule according to the invention undergoes plastic deformation and takes a shape close to the shape of the grooves 40 of the free contact end 30, and therefore provides a fluid sealing seal between the female element 6 and the capsule 2 at a relatively low pressure fluid at the start of cooking, but also provides contact that seals against the fluid at a significantly higher fluid pressure in the female member outside the capsule during cooking. This close correspondence in shape to the grooves 40 of the female member is shown in FIG. 3C, which shows the capsule 2 of the invention after use and which clearly shows that the protruding outward flange 20 contains deformed parts 40 'that correspond in shape to the grooves 40 of the female member.

Next, illustrative embodiments of the sealing member 28 on the outwardly extending flange 20 of the capsule 2 according to the invention will be described in more detail in connection with FIG.

4A shows a first embodiment of a sealing element 28 forming an additional support on an outwardly projecting flange 20 of a capsule 2 according to the invention. The sealing element and the rest of the capsule body are made of the same sheet material. The sealing element 28 comprises two spaced protrusions 50 and 51, each of which protrudes axially from the base of the outwardly extending flange 20 to which the cover 14 is attached, away from the cover 14. The hollow portion 52 is between the two protrusions 50 and 51. The distance between the two protrusions 50 and 51 is such that the free contact end of the annular element 41 is compressed between the converging surfaces of the two protrusions 50 and 51, if the capsule is installed in a predetermined position in the covering element of the device for preparing PITKA and the female member is closed by the closure member to a beverage preparation device. In the embodiment shown in FIG. 4A, the gently sloping portion is located at some distance above the portion of the outwardly extending flange 20 between the sealing member 28 and the swirling edge 43 and is substantially flat. In addition, the distance between the two protrusions 50 and 51 is such that the two protrusions 50 and 51 come into contact with the free contact end of the annular element, if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks. In addition, the two spaced protrusions 50, 51 and the gently sloping portion 52 are configured such that the gently sloping part comes into contact with the free contact end of the annular element if the capsule is installed in a predetermined position in the covering element of the beverage preparation device and the covering element is closed by the closing element of the device for making drinks. As can be seen in FIG. 4A, each protrusion 50, 51 comprises a side wall of the protrusion that is inclined relative to the outwardly extending flange 20 of the aluminum capsule body. The side wall of the protrusion has such a configuration that it is easily deformed if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks.

4B shows a second embodiment of a sealing element 28 on an outwardly projecting flange 20 of a capsule according to the invention. When compared with figa noted the following differences. Each protrusion 50, 51 in this case contains a side wall of the protrusion, which is transverse to the protruding outward flange 20 of the aluminum capsule body. In addition, in this second embodiment, the flat portion 52 is curved and preferably conforms in shape to the shape of the free contact end of the ring member 41.

4C shows a third embodiment of a sealing element 28 on an outwardly projecting capsule flange 20 according to the invention, which together with the side wall 16 of the aluminum capsule body forms an additional support for the enclosing element. The shown sealing element 28 comprises a protrusion 53 protruding from the outwardly extending flange 20 and an inclined, substantially flat, shallow portion 52 between the rounded, uppermost end portion of the protrusion 53 and the side wall 16 of the aluminum capsule body. In this embodiment, the support is formed by a protrusion 53, a flat part 52 and a side wall 16 of the aluminum capsule body. The distance between the upper part of the protrusion 53 and the side wall 16 is such that the free contact end of the annular element 41 is covered by the protrusion 53 and the side wall 16 of the aluminum capsule body, if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by means of a closing element devices for making drinks. In particular, the distance between the protrusion 53 and the side wall 16 of the aluminum capsule body is such that the protrusion 53 and the side wall 16 and, in the shown embodiment, also the flat part 52 of the aluminum capsule body come into contact with the free contact end of the ring element 41, if the capsule is installed in a predetermined position in the covering member of the beverage preparation device and the covering member is closed by the closing member of the beverage preparation device.

Fig. 4D shows a fourth embodiment of a sealing element 28 on an outwardly projecting capsule flange 20 of the invention, which together with the side wall 16 of the aluminum capsule body forms an additional support for the enclosing element. When compared to FIG. 4C, the following differences are noted. In this fourth embodiment, the gently sloping portion 52 is curved and contains a curved part, as well as a flat part that is located at the same level as the part of the protruding outward flange 20 between the protrusion 53 and the curved edge 43. The curved part is preferably shaped in the form of a free the contact end of the annular element 41. Fig. 4E shows a fifth embodiment of the sealing element 28 on the protruding outward flange 20 of the capsule according to the invention, which together with the side wall 16 of the aluminum the capsule housing forms a support for the female member. When compared with fig.4D, the following difference is noted. In this fifth embodiment, the flat portion of the flat portion 52 is located at some distance above the portion of the protruding outward flange 20 located between the protrusion 53 and the curved edge 43. The distance between the protrusion 53 and the side wall 16 it is preferably 0.9-1.25 mm, which allows reliable compression of the free end of the closure element of widely used and industrially manufactured beverage preparation devices (such as Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza) at the protrusion 53 by means of the side wall 16, located very close to it.

In the embodiments shown in FIGS. 4C-4E, the protrusion 53 comprises an outer side wall 54 of the protrusion that is transverse to the portion of the protruding outward flange located between the protrusion 53 and the swirling edge 43, but in other embodiments, this outer side wall 54 of the protrusion may be inclined relative to a given portion of the outwardly extending flange 20.

In all the embodiments shown in FIGS. 4A-4E, each of the protrusions comprises an upper part of the protrusion, forming a part of the protrusion, for example, half, third or quarter of the protrusion, which is the most remote in the axial direction from the base part of the flange 20 to which is attached cover 14. At least one protrusion, but preferably all of the protrusions forming an additional support, is / have such a configuration that the upper part of the protrusion provides the application of radial force to the free contact end of the annular element 4 1, if the capsule is installed in a predetermined position in the female element of the beverage preparation device and the female element is closed by the closing element of the beverage device.

FIG. 4F shows a sixth embodiment of a sealing member 28 on an outwardly projecting flange 20 of a capsule according to the invention. When comparing, for example, with FIG. 4B, the following differences are noted. In this sixth embodiment, the gently sloping portion 52 is V-shaped, with the lower part of the V-shaped profile being at the same level as the base portion of the outwardly extending flange 20 located between the outer protrusion 51 and the twisted edge 43. Thus, no support is provided for the free contact end of the annular member 41, but the upper part of the inner protrusion 50 provides an outward radial force to the free contact end of the annular element 41, and the upper part of the outer protrusion 51 allows an inward radial force to be applied to the free contact end of the annular member 41 if the capsule is installed in a predetermined position in the covering member of the beverage device and the covering member is closed by the closing member of the beverage device. Thus, the free contact end is squeezed by the sealing element 28, resulting in a satisfactory seal.

In capsules in which the sealing structure 28 has protrusions 50, 51 and a gently sloping portion or depression 52 therebetween, as shown by way of example in FIGS. 4A, 4B and 4F, the center of the gently sloping portion or depression 52, which extends circumferentially around a central axis capsules, preferably has a diameter of 29-33 mm, more preferably 30.0-31.4 mm, and most preferably 30.3-31.0 mm, so that (when viewed in radial section) the free end of the closure element is widely used and industrially manufactured beverage devices (such as C itiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza) is placed with exact centering between the protrusions 50, 51, and the compressive effect is evenly distributed on the inner and outer protrusions 50, 51. To effectively squeeze the distance between the protrusions 50, 51 in such devices preferably 0.9-1.25 mm.

Fig. 4G shows a seventh embodiment of a sealing element 28 on an outwardly projecting flange 20 of a capsule according to the invention. As also shown in FIG. 2, the female element 6 of the beverage preparation device has an annular element 41 having a free contact end 30 with a plurality of radially extending open grooves 40, some of which are shown in FIG. 4G.

As in the examples shown in figa, 4B and 4F, the sealing element 28 has two spaced protrusions 50 and 51, each of which protrudes in the axial direction from the base portion 23 protruding outwardly of the flange 20, to which the cover 14 is attached, in the direction from the cover 14. As in the example shown in FIG. 4F, the gently sloping portion 52 having a rounded bottom is located between the two protrusions 50 and 51.

The difference in comparison with the examples shown in FIGS. 4A, 4B and 4F is that in the example shown in FIG. 4G, the first protrusion 51 of the two protrusions protrudes further from the base portion 23 of the outwardly extending flange 20 than the second protrusion 50 of two protrusions.

Another difference is that the bottom 56 of the annular cavity 55 between the inner protrusion 51 and the side wall 16 is located at a distance in the axial direction from the base portion 23 to which the cover is attached. The axial distance from the bottom 56 to the cover is preferably less than the axial distance from the flat portion 52 to the cover.

When the female member 6 and / or the closing member 8 are moved towards each other with the capsule sealing member 28 located therebetween, the free contact end 30 of the annular member 41 may first come into contact with the first protrusion 51 of the two protrusions and subsequently contacts the second of the two protrusions (figa).

If and when the free contact end 30 of the ring member 41 is in contact with the inner protrusion 51 of the two protrusions, the capsule is centered relative to the female element 6. In addition, if the inner protrusion 51 of the two protrusions is radially too far outside, for example, locally due to non-circularity or displacement of the capsule from the center, or essentially due to the fact that the free contact zone has a relatively small diameter, the free contact end compresses the inner protrusion 51 of the two protrusions in inward direction. Thus, the outer of these two protrusions is displaced inward, so that a reliable strong sealing pressure acts on the outer protrusion 50 of the two protrusions, despite the relatively low deformability of this outer protrusion 50 due to its lower height. The relatively high stiffness of the outer protrusion 50 of the two protrusions makes it possible to apply a large contact force when it is deformed (Fig. 5B), the relatively high back pressure provides a particularly reliable seal with high pressure resistance. In addition, the outer protrusion 50 of the two protrusions is pressed outward, while the load is counteracted by the circumferential stress in the outer of the two protrusions, which is uniformly distributed around the circumference so that a uniformly distributed seal pressure is achieved.

As can also be seen from FIG. 5a, the free contact end 30 of the annular member 41 has an inner peripheral surface portion 71 in contact with the inner protrusion 51 and an outer peripheral surface portion 70 in contact with the outer protrusion 50. Radially extending open grooves 40 have a greater depth on the inner surface portion 71 than on the outer surface portion 70, or grooves may not be present on the outer surface portion 70. Thus, the smaller, relatively rigid outer protrusion 50 is firmly and accurately pressed against the relatively smooth outer portion 70 of the surface of the free contact end 30.

The distance between the two protrusions 50 and 51 is such that in the end (FIGS. 5A and 5B)), the free contact end 30 of the ring member 41 is pressed between the converging surfaces of the two protrusions 50 and 51 when the enclosing member is completely closed by the closure member.

The gently sloping portion 52 is axially spaced from the cover 14. As illustrated in FIG. the inclination and "heeling" of the protrusions 50, 51 inward to the free end 30 of the annular element 41 when closing the female element 6. This provides an increase in the radial pressure of the seal, which acts (in addition to axial closing pressure), so that there is an increased seal pressure to ensure a satisfactory seal.

More specifically, three stages can be distinguished if the sealing element of the rim according to FIGS. 4G, 5A, 5B and 6 is clamped between the annular element 41 of the enclosing element 6 and the closing element 8.

In a first step, contact is made between the annular member 41 and the sealing member 28 in the direction of the inner protrusion 51, as described above, where necessary, and an initial seal is formed between the substantially inwardly facing surface portion of the outer protrusion 50 and the outer surface portion 70 of the free end surface 30 of the annular element 41. The location of this inwardly facing surface portion of the outer protrusion 50 in the radial direction and the local radius of curvature of the outer protrusion 50 are intended to provide so that the surfaces in contact with each other are oriented almost vertically. This makes it possible to achieve a very strong jamming effect, so that a very small vertical closing force results in very large horizontal contact pressures. These large horizontal forces act with little deformation of the outer protrusion 50, since the reaction forces generated by the contact of the surfaces will be restrained mainly due to the circumferential stress in the outer protrusion 50. In addition, such circumferential stresses are largely independent of the rest of the sealing element 28, so that high stiffness to create a large sealing force can be combined with flexibility to adapt to the tolerances and displacement of the capsule.

Since the bottom 56 of the annular depression and, accordingly, the inner "leg" of the inner protrusion moves away from the cover, friction and stiffness in the lateral directions are reduced, and the sealing element 28 has a high degree of flexibility to adapt to effects due to misalignment and tolerances, without excessive deformation of the sealing surfaces . This also helps to maintain an almost vertical orientation of the contacting surfaces, even if misalignment and tolerances are compensated by lateral displacement of the contacting surface of the sealing element 28.

In the second stage, the closure and additional compression of the cooking chamber on the o-ring are achieved by increasing the hydraulic pressure. As the compressive force increases, the bottom 56 of the annular depression 55 is pushed down under mechanical and hydraulic loads, and the entire sealing element rotates around the outer lower end 57 of the outer protrusion 50 until the bottom 56 of the annular depression 55 touches the cover (Fig. 5B) . This rotation leads both to the movement of the sealing element 28 as a “rigid body”, and to a change in the shape of the sealing element, both factors leading to additional contact pressure transmitted to the main sealing surface. Since a significant part of the deformation occurs in the form of plastic deformation, the contact zone effectively corresponds in shape to the sealing zone and makes it possible to compensate for some misalignment and manufacturing tolerances.

In the third stage, an additional increase in the axial (in this case vertical) force causes further deformation of the sealing element 28 (Fig. 5B). In the presented embodiment, a reliable, very tight seal with a large pressure drop at a high contact pressure is ensured by deformation of the inclined section 58, forming a transition zone from the outer protrusion 50 to the flat part, while this section 58 forms a relatively straight section between more curved parts of the flat part 52 and the outer protrusion 50. Such deformation leads to a particularly high contact pressure along a narrow line between the sealing element 28 and the outside th surface portion 70 of the free end 30 of the annular member 41.

In addition, in order to obtain an effective seal, it is preferable that the outer protrusion 50 is jammed and thereby deformed between the outer and inner ridge-shaped protrusions 59, 60 of the ring member 41.

As shown in FIG. 5B, the inner protrusion 51 bends outward when the sealing element 28 deforms, thereby “pulling” the material of the sealing element toward the bottom 56 of the ring element 55, and a corresponding reduction in contact pressure is provided.

In particular, in connection with the final mutual displacement of the annular element 41 and the sealing element 28, it should be noted that a particular problem is that most of the annular elements have one or more jumpers 61 (Fig.6) between the outer and inner ridge-shaped protrusions 59, 60 annular element 41. Such jumpers 61 cause a break in the continuity of the annular upper space 62, in which the outer protrusion 50 is jammed during the third stage. Leakage, especially in transition zones, in which the jumper begins and ends in the circumferential direction, is reduced because the outer protrusion is made with a shape that allows it to roll and bulge radially outward, so that excess material of the sealing element locally shifts from the seal between the outer the protrusion 50 and the annular element 41, as a result of which the negative impact on this seal is reduced and the possibility of obtaining a substantially continuous seal eniya along a line passing under a bridge 61.

In the above description, the invention has been described with reference to specific examples of embodiments of the invention. However, it will be apparent that various modifications and changes can be made therein without departing from the broader nature and scope of the invention as defined by the appended claims.

Claims (83)

1. A capsule containing a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by supplying pressure fluid to the capsule, wherein the capsule contains an aluminum capsule body having a central axis of the capsule body, and said aluminum capsule body is made from the bottom part, the side wall and the protruding outward flange, the capsule further comprises an aluminum cap attached to the protruding outward flange, and the cap hermetically closes the capsule, and the capsule is additional additionally contains a sealing element on the protruding outward flange to provide sealing against fluid communication with the female element of the beverage device, if the capsule is installed in a predetermined position in the female element of the beverage device and the female element is closed by the closing element of the beverage device, such as an extraction plate of a beverage preparation device such that the protruding flange of the capsule and at least a portion of the capsule sealing element is sealed between the enclosing element and the closing element of the beverage preparation device, wherein the covering element of the beverage preparation device comprises an annular element having a central axis of the annular element and a free contact end, and said free contact end of the annular element made with many radially extending open grooves, characterized in that the sealing el the cop is integral with the protruding flange and contains at least one protrusion protruding from the protruding outward flange, wherein said at least one protrusion comprises an upper part of the protrusion and said at least one protrusion is configured such that the upper part of the protrusion provides the application of radial force to the free contact end of the annular element, if the capsule is installed in a predetermined position in the covering element of the device for making drinks and the covering element closed by the closing element of the device for making drinks. 2. The capsule according to claim 1, in which the sealing element contains an additional protrusion protruding from the protruding outward flange, and a shallow part between the two protrusions, the distance between these two protrusions is such that the free contact end of the annular element is located between the two protrusions, if the capsule is installed in a predetermined position in the enclosing element and when closing the enclosing element by means of a closing element. 3. The capsule according to claim 2, in which the first of these two protrusions protrudes further from the base of the protruding outward flange to which the cap is attached than the second of these two protrusions. 4. The capsule according to claim 3, in which the first of these two protrusions is a radially inner protrusion of two protrusions. 5. The capsule according to any one of claims 2 to 4, in which the sealing element comprises an annular cavity between the inner protrusion of these protrusions and the side wall, while the annular cavity has a bottom located at an axial distance from the base portion to which the cap is attached . 6. The capsule according to any one of paragraphs.2-5, in which the flat part is located at a distance in the axial direction from the lid. 7. The capsule according to claims 5 and 6, in which the bottom of the annular cavity is located at the first axial distance from the cover and the shallow part is at the second axial distance from the cover, wherein said second axial distance is greater than the specified first axial distance. 8. The capsule of claim 7, wherein the sealing element is deformed so that, when used, closing the female element causes the side wall to deform to allow the bottom of the annular cavity to enter substantially into contact with the lid. 9. The capsule according to claim 7 or 8, in which the inner of these two protrusions is made with such a shape that it bends outward if the sealing element is deformed so that the gently sloping part contacts the cover. 10. The capsule according to any one of paragraphs.2-9, in which the radially outer of the two protrusions has greater stiffness with respect to deformation in the radial direction outward than the inner of the two protrusions. 11. The capsule according to any one of paragraphs.2-10, in which the first of these two protrusions has an extreme upper end extending around the axis of the capsule with a diameter of 29.2 to 29.8 mm, and the second of these two protrusions has an extreme the upper end extending around the axis of the capsule with a diameter of 31.9 to 32.4 mm. 12. Capsule according to any from PP.2-11, in which the outer of the two protrusions has a substantially inwardly facing surface portion extending at an enclosed angle of less than 8 ° and preferably less than 6 ° or less than 4 ° relative to the axis of the capsule body. 13. The capsule according to any one of paragraphs.2-12, in which the distance between the two protrusions is such that these two protrusions come into contact with the free contact end of the annular element, if the capsule is installed in a predetermined position in the enclosing element and the enclosing element is closed by means of a closure item. 14. The capsule according to any one of paragraphs.2-13, in which the two spaced protrusions and the flat part are made so that the flat part comes into contact with the free contact end of the annular element, if the capsule is installed in a predetermined position in the enclosing element and the enclosing element is closed by means of a closing element. 15. The capsule according to any one of claims 2 to 14, wherein the capsule forms a support for the female member, if the capsule is installed in a predetermined position in the female member and the female member is closed by means of a closing member, said supporting member covering at least a portion of the free contact end of the annular element and the specified support is formed by these two protrusions and a gentle part between them. 16. The capsule according to any one of paragraphs.2-15, in which, when viewed in cross section along a plane passing through the axis of the capsule body, the gently sloping portion has an inclined portion forming a transition zone to the outer of the two protrusions, wherein the inclined portion forms relatively straight section between more curved sections. 17. The capsule according to clause 16, in which the inclined section is oriented at a enclosed angle of at least 10 ° and more preferably at least 20 ° and at most 60 ° and more preferably at most 50 ° relative to the lid. 18. Capsule according to any from PP.2-15, in which the flat part is essentially flat. 19. The capsule according to any one of claims 2 to 15, in which the gently sloping portion comprises a curved portion. 20. The capsule according to claim 19, in which the flat part is V-shaped. 21. The capsule according to any one of paragraphs.2-20, in which the outer of these two protrusions is made with a shape that allows it to roll and bulge in the radial direction outward when it is compressed in the axial direction, when it is in contact with the outward-facing surface of the free end an annular element located between these two protrusions. 22. The capsule according to any one of paragraphs.2-21, in which the transition zone from the outer of the two protrusions to the protruding radially outward flange of the base part to which the lid is attached has an inner radius of less than 0.15 mm and preferably less 0.12 mm, while the radially outer wall of the specified outer of the two protrusions is oriented at an enclosed angle relative to the axis of the capsule body, which is less than 8 ° and more preferably less than 6 °. 23. The capsule according to any one of the preceding paragraphs, wherein the capsule contains an extractable product as a substance for preparing a drinkable drink, and said extractable product is preferably 5-20 g, preferably 5-10 g, more preferably 5-7 g of fried and ground coffee. 24. The capsule according to any one of the preceding paragraphs, in which the outer diameter of the protruding outward flange of the capsule exceeds the diameter of the lower part of the capsule. 25. The capsule according to paragraph 24, in which the outer diameter of the protruding outward flange is approximately 37.1 mm and the diameter of the lower part of the capsule is approximately 23.3 mm. 26. The capsule according to any one of the preceding paragraphs, in which the thickness of the aluminum capsule body is such that it is easily deformed if the capsule is installed in a predetermined position in the covering element of the beverage preparation device and the covering element is closed by the closing element of the beverage preparation device, wherein the thickness of the aluminum capsule body is preferably 20-200 microns, preferably 100 microns. 27. The capsule according to any one of the preceding paragraphs, in which the thickness of the aluminum cap is 15-65 microns, preferably 30-45 microns and more preferably 39 microns. 28. The capsule according to any one of the preceding paragraphs, in which the wall thickness of the aluminum cap is less than the wall thickness of the aluminum capsule body. 29. The capsule according to any one of the preceding paragraphs, in which the aluminum cap is configured to tear on the closure element of the beverage preparation device, such as an extraction plate of the beverage preparation device, under the action of fluid pressure in the capsule. 30. The capsule according to any one of the preceding paragraphs, in which the side wall of the aluminum capsule body has a free end opposite the lower part, while the protruding outward flange protrudes from the specified free end of the side wall in a direction at least substantially transverse to the central axis of the capsule body . 31. The capsule of claim 30, wherein the outwardly extending flange comprises a curled outer edge. 32. The capsule according to p, in which the inner edge of the twisted outer edge of the protruding outward flange has a radius relative to the Central axis of the capsule body, comprising at least 32 mm 33. The capsule according to p. 31 or 32, in which the sealing element is located between the free end of the side wall of the aluminum capsule body and the inner edge of the swirling outer edge of the protruding outward flange. 34. The capsule according to paragraphs 31, 32 or 33, in which the twisted outer edge of the protruding outward flange has the largest size of approximately 1.2 mm 35. The capsule according to any one of claims 33-34, wherein the inner diameter of the free end of the side wall of the aluminum capsule body is approximately 29.5 mm. 36. The capsule according to any one of paragraphs.30-35, in which the distance between the free end of the side wall of the aluminum capsule body and the outermost edge of the protruding outward flange is approximately 3.8 mm. 37. The capsule according to any one of the preceding claims, wherein the height of the aluminum capsule body is approximately 28.4 mm. 38. The capsule according to any one of the preceding paragraphs, in which the aluminum capsule body is truncated, while the side wall of the aluminum capsule body preferably forms an angle with a line transverse to the central axis of the capsule body of approximately 97.5 °. 39. The capsule according to any one of the preceding paragraphs, in which the lower part of the aluminum capsule body has the largest inner diameter of approximately 23.3 mm. 40. The capsule according to § 39, in which the lower part of the aluminum capsule body is truncated and preferably has a height of the lower part of approximately 4.0 mm, and the lower part further has a substantially flat central part opposite the lid and having a diameter, approximately 8.3 mm. 41. The capsule according to any one of the preceding paragraphs, in which the height of the part of the sealing element with which the free end of the covering element must first come into contact when closing the covering element is at least about 0.1 mm, more preferably at least 0.2 mm and most preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm and most preferably at most 1.2 mm. 42. The capsule according to any one of the preceding paragraphs, wherein the capsule comprises an inner surface and an inner coating is provided on the inner surface of at least the side wall of the capsule. 43. The capsule of claim 42, wherein the aluminum capsule lid is attached to the outwardly extending flange by means of a sealing varnish, wherein said inner coating consists of the same material as the sealing varnish. 44. The capsule according to paragraph 42 or 43, in which the sealing element is free from internal coating. 45. The capsule according to any one of the preceding paragraphs, wherein the capsule contains an outer surface and a colored lacquer is provided on the outer surface of the capsule. 46. The capsule according to item 45, in which on the outer surface of the colored varnish provides an outer coating. 47. The capsule according to item 45 or 46, in which the sealing element is free from colored varnish. 48. The capsule according to any one of the preceding paragraphs, wherein said at least one protrusion comprises a side wall of the protrusion that is inclined relative to the protruding outward flange of the aluminum capsule body, said side wall of the protrusion having such a configuration that it is easily deformed if the capsule installed in a predetermined position in the covering element of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks. 49. The capsule according to claim 48, wherein the distance between the protrusion and the side wall of the aluminum capsule body is such that the free contact end of the annular element comes into contact with the protrusion and the side wall of the aluminum capsule body if the capsule is installed in a predetermined position in the enclosing member of the device for making drinks and the covering element is closed by means of the closing element of the device for making drinks. 50. The capsule according to any one of the preceding paragraphs, in which the sealing element, in addition to the specified at least one protrusion protruding from the protruding outward flange, comprises a shallow part between the upper part of the protrusion and the side wall of the aluminum capsule body. 51. The capsule according to claim 50, wherein a protrusion is formed by a protrusion, a flat part and a side wall of the aluminum capsule body, wherein the distance between the protrusion and the side wall is such that the free contact end of the annular element is covered by the protrusion and the side wall of the aluminum capsule if the capsule is installed in a predetermined position in the female member of the beverage device and the female member is closed by the female member of the beverage device. 52. The capsule according to claim 49 or 50, wherein the protrusion, the side wall of the aluminum capsule body and the flat part are made so that the flat part comes into contact with the free contact end of the annular element if the capsule is installed in a predetermined position in the female element of the preparation device drinks and the surrounding element is closed by means of the closing element of the device for making drinks. 53. The capsule according to any one of the preceding paragraphs, in which the sealing structure is configured to deform in such a way that said support contacts to provide a seal with respect to the fluid with at least a portion of the free contact end of the annular element, if using the maximum fluid pressure in the female element of the beverage preparation device is in the range of 6-20 bar, preferably between 12 and 18 bar. 54. The capsule according to any one of the preceding paragraphs, in which the sealing structure is configured to deform in such a way that said support contacts to provide a seal with respect to the fluid with at least part of the free contact end of the annular element, if during cooking the specified free contact the end of the ring element provides the application of force F2 to the sealing structure of the capsule, while the force F2 is in the range of 500-1500 N, preferably in the range of 750-1250 N, when yes Leniye P2 of fluid in said female element outside the capsule is in the range 6-20 bar, preferably between 12 and 18 bar. 55. The capsule according to any one of the preceding paragraphs, in which the sealing structure is configured to deform in such a way that said support contacts to provide a seal with respect to the fluid with at least part of the free contact end of the annular element, if used before cooking or in the beginning of cooking, the specified free contact end of the annular element provides the application of force F1 to the sealing structure of the capsule, while the force F1 is in the range of 30-150 N, preferably tionary 40-150 N, and more preferably 50-100 N, when the fluid pressure P1 in the female element of the device for the beverage outside the capsule is in the range 0.1-4 bar, preferably 0.1-1 bar. 56. The capsule according to any one of the preceding paragraphs, in which the sealing structure is configured to deform in such a way that said support contacts to provide a seal with respect to the fluid with at least part of the free contact end of the annular element, if the free contact end of the annular element, which is pressed against the sealing structure, has a plurality of open grooves extending in the radial direction, uniformly distributed relative to each other in the direction the circumference of the indicated free contact end of the annular element. 57. The capsule according to any one of the preceding paragraphs, in which the sealing structure is configured to deform in such a way that said support contacts to provide a seal with at least a portion of the free contact end of the annular element, if the largest width of each of these grooves is 0.9- 1.1 mm, preferably 0.95-1.05 mm, more preferably 0.98-1.02 mm, the maximum height of each of these grooves in the axial direction of the covering element of the device for preparing PITKA of 0,01-0,09 mm, preferably 0.03-0.07 mm, more preferably 0,045-0,055 mm, most preferably 0.05 mm, and the number of said grooves is 90-110, preferably 96. 58. The capsule according to any one of the preceding paragraphs, in which the sealing structure and the rest of the capsule body are made of the same sheet material. 59. A system for preparing a drinkable beverage from a capsule by using a fluid supplied under pressure to a capsule, comprising: a beverage preparation device comprising a female capsule receiving member, the female component comprising a fluid injection means for supplying pressurized fluid to the capsule, and the beverage beverage device further comprises a closure member, such as an extraction plate, for closing the covering element of the device for making drinks, and the covering element of the device for making drinks further comprises a ring element having a central axis of the ring element and a free contact end, and said free contact end of the ring element, if necessary, is configured with a plurality of open grooves extending in the radial direction; and capsule according to any one of the preceding paragraphs. 60. The system of claim 59, wherein said free contact end of the annular element has a first peripheral surface portion in contact with said first protrusion if the capsule is installed in a predetermined position in the enclosing member and when closing the enclosing member by means of a closure member and a second peripheral portion the surface in contact with the specified second protrusion, if the capsule is installed in a predetermined position in the enclosing element and when closing the enclosing element by closing element, wherein said radially extending open grooves have a greater depth on said first surface portion than said second surface portion, or said radially extending open grooves are absent on said second surface portion. 61. The system according to p. 59 or 60, in which the capsule is a capsule according to any one of claims 2 to 22 and in which the covering element and the protrusions are located so that when moving the covering element and / or the closing element towards each other, with the sealing element located between them, the free contact end of the annular element can first contact the first of these two protrusions and subsequently contacts the second of these two protrusions. 62. The system according to any one of claims 59-61, wherein the capsule is a capsule according to claim 16 or 17 and in which the annular element is configured to deform the inclined portion. 63. The system according to any one of paragraphs 59-62, in which the annular element has an outer and inner ridge-shaped protrusions and the outer of these two protrusions is configured to deform between said outer and inner ridge-shaped protrusions if the sealing element is sandwiched between the enclosing element and closing element. 64. The system according to any one of paragraphs 59-63, in which the capsule is a capsule according to item 21 or 22 and in which the annular element has one or more jumpers between the outer and inner ridge-shaped protrusions, while this or each jumper forms an interruption of the annular the space between the outer and inner ridges. 65. The system according to any one of paragraphs 59-64, in which, when used, the maximum fluid pressure in the female element of the beverage preparation device is in the range of 6-20 bar, preferably between 12 and 18 bar. 66. The system according to any one of paragraphs 59-65, wherein the system is configured such that when used during brewing, the free end of the female member of the beverage device provides a force F2 to the capsule's sealing member to provide fluid-tight contact between the outwardly projecting flange of the capsule and the female element of the beverage preparation apparatus, the force F2 being in the range of 500-1500 N, preferably in the range of 750-1250 N, when the fluid pressure P2 is in em element device for beverage preparation capsule from the outside is in the range 6-20 bar, preferably between 12 and 18 bar. 67. The system according to any one of paragraphs 59-66, wherein the system is designed so that when used before brewing or at the beginning of brewing, the free end of the female element of the beverage device provides the application of force F1 to the sealing element of the capsule to provide a sealing against fluid the contact medium between the outwardly extending flange of the capsule and the female element of the beverage preparation apparatus, wherein the force F1 is in the range of 30-150 N, preferably 40-150 N, more preferably 50-100 N, when ue P1 of fluid within the female element of the device for the beverage outside the capsule is in the range 0.1-4 bar, preferably 0.1-1 bar. 68. The system according to any one of paragraphs 59-67, in which many radially extending open grooves are evenly distributed relative to each other in the circumferential direction of the free contact end of the annular element of the device for making drinks. 69. The system of claim 68, wherein the largest width of each groove is 0.9-1.1 mm, preferably 0.95-1.05 mm, more preferably 0.98-1.02 mm, with a maximum height of each the grooves in the axial direction of the female element of the beverage preparation device are 0.01-0.09 mm, preferably 0.03-0.07 mm, more preferably 0.045-0.055 mm, most preferably 0.05 mm, with 90 grooves -110, preferably 96, and if necessary, the width of the free contact end in the radial direction at the location of the the bulk is 0.05-0.9 mm, preferably 0.2-0.7 mm, and more preferably 0.3-0.55 mm. 70. The system according to any one of paragraphs 59-69, in which, when used, when the closing element of the beverage device closes the female element of the beverage device, at least the free contact end of the female element of the beverage device can move relative to the closing element of the device for preparing drinks under the influence of fluid pressure in the female element of the device for preparing drinks to the closing element of the device for beverage dispenser to maximize the force between the capsule flange and the free end of the female element of the beverage preparation device, the female element optionally comprising a first component and a second component, the second component containing the free contact end of the female element and the second component moving relative to the first component between the first and second positions, and the second component can move from the first position to the second position in the direction the closure element under the influence of the fluid pressure in the enclosing element, and if necessary, the force F1 according to clause 67 is achieved if the second component is in the first position at a pressure P1 of the fluid in the enclosing element, as indicated in clause 67, and if necessary, the force F2 according to claim 66 is achieved if the second component is moved toward the second position under the influence of the pressure P2 of the fluid in the female member, as indicated in claim 66. 71. The system according to any one of paragraphs 59-70, wherein when used, when the closing element of the beverage device closes the female element of the beverage device, the female element of the beverage device can move relative to the closing element of the beverage device under pressure fluid in the covering element of the device for making drinks to the closing element of the device for making drinks for application as much as possible force between the flange of the capsule and the free end of the female element of the device for making drinks. 72. The use of a capsule according to any one of claims 1 to 58 in a beverage preparation device comprising a female capsule receiving member, the female member comprising a fluid injection means for supplying pressurized fluid to the capsule and a beverage preparation device further comprises a closure element, such as an extraction plate, for closing the enclosing element of the beverage preparation device, the enclosing element of the cooking device the beverage event further comprises an annular element having a central axis of the annular element and a free contact end, and said free contact end of the annular element is optionally provided with a plurality of radial grooves; wherein the capsule contains a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by means of a fluid supplied under pressure into a capsule intended for pumping a fluid by means of a beverage preparation device, the capsule contains an aluminum capsule body having a central axis of the capsule body moreover, the specified aluminum capsule body is made with a lower part, a side wall and a protruding outward flange, and the capsule further comprises an aluminum cover attached to the outwardly extending flange, the lid sealingly closing the capsule, wherein the capsule further comprises a sealing element integral with the outwardly extending flange to provide fluid sealing contact with the female member of the beverage device if the capsule is installed in a predetermined position in the enclosing member of the beverage device and the enclosing member is closed by the closure member so that the protruding Ms capsule flange and at least a portion of the sealing member of the capsule sealingly trapped between the female element and the closure element of the beverage preparation device. 73. The application of claim 72, wherein when used, the maximum fluid pressure in the female member of the beverage device is in the range of 6-20 bar, preferably between 12 and 18 bar. 74. The application of claim 72 or 73, wherein when used during cooking, the free end of the female element of the beverage device provides a force F2 to the capsule sealing element to provide fluid sealing contact between the outwardly facing capsule flange and the female element devices for preparing beverages, the force F2 being in the range of 500-1500 N, preferably in the range of 750-1250 N, when the pressure P2 of the fluid in the female element of the device for Flow Chart beverage outside the capsule is in the range 6-20 bar, preferably between 12 and 18 bar, and wherein there is a contact seal with respect to the fluid. 75. The use according to any one of claims 72-74, wherein, when used before or at the beginning of cooking, the free end of the female element of the beverage device provides a force F1 to the capsule sealing element to provide fluid sealing contact between the protruding the flange of the capsule and the female element of the beverage preparation apparatus, wherein the force F1 is in the range of 30-150 N, preferably 40-150 N, more preferably 50-100 N, when the fluid pressure P1 is about the gripping element of the beverage preparation device outside the capsule is in the range of 0.1-4 bar, preferably 0.1-1 bar, and there is contact sealing with respect to the fluid. 76. The use according to any one of claims 72 to 75, wherein the plurality of radially open open grooves are uniformly distributed relative to each other in the circumferential direction of the free contact end of the annular element of the beverage device. 77. The use according to any one of paragraphs 72-76, in which the capsule is a capsule according to any one of paragraphs.2-22 and in which when moving the covering element and / or the closing element towards each other with the capsule sealing element located between by them, the free contact end of the annular element may first contact the first of these two protrusions and subsequently contact the second of these two protrusions if and when the free contact end of the annular element is in contact with the inner of the two stupas, the capsule is centered relative to the enclosing element or is pressed inward in the radial direction, capturing the outer of these two protrusions. 78. The use according to any one of claims 72-77, wherein the capsule is a capsule according to any one of claims 2 to 22, wherein the annular element presses the outer of the two protrusions outward. 79. The use according to any one of claims 72-78, wherein the capsule is a capsule according to any one of claims 2 to 22, wherein the gently sloping portion is axially spaced from the lid and the gently sloping portion between the protrusions is displaced by the annular member when closing the female element, causing the inclination and inclination of the protrusions inward to the free end of the annular element. 80. The use according to any one of claims 72 to 79, wherein the capsule is a capsule according to any one of claims 5 to 9, wherein the bottom of the annular depression is pressed against the lid by an annular element. 81. The use according to any one of paragraphs 72-80, in which the system is a system according to item 64, wherein the outer of the two protrusions heels and bulges radially outward in the area in which it is compressed by a jumper.

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